Ability to accept incoming emails from unknown users (#2230, #3003).

An option lets you specify how to handle emails from unknown users:
* ignore: the email is ignored (previous and default behaviour)
* accept: the sender is considered as an anonymous user
* create: a user account is created (username/password are sent back to the user)

Permissions have to be consistent with the chosen option. Eg. if you choose 'create', the 'Non member' role must have the 'Add issues' permission so that an issue can be created by an unknown user via email. If you choose 'accept', the 'Anonymous' role must have this permission.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2789 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/tasks/email.rake

@@ -21,6 +21,13 @@ namespace :redmine do
     desc <<-END_DESC
 Read an email from standard input.
 
+General options:
+  unknown_user=ACTION      how to handle emails from an unknown user
+                           ACTION can be one of the following values:
+                           ignore: email is ignored (default)
+                           accept: accept as anonymous user
+                           create: create a user account
+  
 Issue attributes control options:
   project=PROJECT          identifier of the target project
   status=STATUS            name of the target status
@@ -47,6 +54,7 @@ END_DESC
       options = { :issue => {} }
       %w(project status tracker category priority).each { |a| options[:issue][a.to_sym] = ENV[a] if ENV[a] }
       options[:allow_override] = ENV['allow_override'] if ENV['allow_override']
+      options[:unknown_user] = ENV['unknown_user'] if ENV['unknown_user']
       
       MailHandler.receive(STDIN.read, options)
     end
@@ -54,6 +62,13 @@ END_DESC
     desc <<-END_DESC
 Read emails from an IMAP server.
 
+General options:
+  unknown_user=ACTION      how to handle emails from an unknown user
+                           ACTION can be one of the following values:
+                           ignore: email is ignored (default)
+                           accept: accept as anonymous user
+                           create: create a user account
+  
 Available IMAP options:
   host=HOST                IMAP server host (default: 127.0.0.1)
   port=PORT                IMAP server port (default: 143)
@@ -61,7 +76,7 @@ Available IMAP options:
   username=USERNAME        IMAP account
   password=PASSWORD        IMAP password
   folder=FOLDER            IMAP folder to read (default: INBOX)
-
+  
 Issue attributes control options:
   project=PROJECT          identifier of the target project
   status=STATUS            name of the target status
@@ -107,6 +122,7 @@ END_DESC
       options = { :issue => {} }
       %w(project status tracker category priority).each { |a| options[:issue][a.to_sym] = ENV[a] if ENV[a] }
       options[:allow_override] = ENV['allow_override'] if ENV['allow_override']
+      options[:unknown_user] = ENV['unknown_user'] if ENV['unknown_user']
 
       Redmine::IMAP.check(imap_options, options)
     end